Method for Measuring Adhesion of Impregnated Composite Electrodes

Measuring Electrode Adhesion by Combining Electrolyte-Impregnated Sealing Mechanisms with SAICAS Micro-Cutting

This technology measures electrode adhesion in an electrolyte-impregnated state that simulates actual battery operating conditions by performing SAICAS (Surface and Interfacial Cutting Analysis Systems) analysis using a micro-blade within a sealed, electrolyte-filled sample holder.

Conventional dry-state adhesion measurement methods fail to reflect the electrolyte-impregnated environment inside a battery. Consequently, it has been difficult to accurately predict and evaluate electrode-current collector delamination and electrode material isolation that occur during actual operation.

This technology utilizes a sample holder with a base and a rim secured by screws to maintain the electrode in an electrolyte-immersed state, allowing for quantitative measurement of adhesion at various depths by cutting and peeling to a target depth with a micro-blade. It can be applied to the development of new binder materials and electrode process quality control, providing baseline data for screening adhesion behavior weakened by electrolyte swelling prior to cell assembly.

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Key Features:

• A step of placing and securing a sample consisting of a current collector and a composite electrode into a sample holder
• A step of immersing the secured sample in an electrolyte to create an environment similar to the interior of an actual battery
• A step of measuring adhesion by cutting and peeling the impregnated sample to a target depth using a micro-blade
• A sample holder consisting of a base with several screw holes along the edge and a rim secured to the base with screws

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